The M1917 Enfield, formally named "United States rifle, cal .30, Model of 1917" was an American modification of the British .303 caliber P14 rifle developed and manufactured from 1917-1918. The Enfield rifle was noted for several design features. It was designed with a rear receiver aperture sight, protected by sturdy "ears," a design that proved to be faster and more accurate than the typical mid-barrel sight. Future American rifles, such as the...